Buy 285/55 R20 Tyres

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PRIMEMASTER R/T

285/55R20 Q (117)
  • -
    Fuel Efficiency
    Fuel Efficiency / Rolling Resistance: -

    How much fuel the tyre uses as it rolls. Graded A to E, where A is the most efficient and E the least.

  • -
    Wet Grip
    Wet Grip / Braking Performance: -

    How well the tyre stops in the wet. Graded A to E, where A is the shortest stopping distance. Each grade is worth roughly 3 metres, about a car length.

  • -dB
    External Noise
    Noise Emission / Exterior Noise: - dB

    How loud the tyre is from outside the car, measured in decibels. Graded A to C, where A is the quietest.

  • Tick Icon Car
    Car tyre:

    Designed for cars, rather than vans, 4x4s or commercial vehicles.

Fit from:02-09-2026
Fully Fitted Price
£15232
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All-Terrain T/A KO2

285/55R20 T (117)
4.8/5
(8 reviews)
  • E
    Fuel Efficiency
    Fuel Efficiency / Rolling Resistance: E

    How much fuel the tyre uses as it rolls. Graded A to E, where A is the most efficient and E the least.

  • B
    Wet Grip
    Wet Grip / Braking Performance: B

    How well the tyre stops in the wet. Graded A to E, where A is the shortest stopping distance. Each grade is worth roughly 3 metres, about a car length.

  • B75 dB
    External Noise
    Noise Emission / Exterior Noise: B (75 dB)

    How loud the tyre is from outside the car, measured in decibels. Graded A to C, where A is the quietest.

  • Tick Icon Car
    Car tyre:

    Designed for cars, rather than vans, 4x4s or commercial vehicles.

Fit from:02-09-2026
Fully Fitted Price
£42272
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285/55 R20 Size Guide

285/55 R20 is suitable for SUVs and pick-ups as they are larger diameter tyres. Tyres of this size have a large sidewall which protects the wheel on rougher roads. This size is easy to break down. 285 is the width in mm. 55 is the aspect ratio where the sidewall height is 55% of 285mm, which is 157mm. R 20 means it is a radial tyre, a tyre where the cords radiate from the centre of the tyre, and that it is on a 20-inch rim. This gives it an overall diameter of 822mm. That sidewall protects your wheel. We supply 285/55 R20 at Tyres.co.uk.

Part of the sizeValueWhat it means
Section width 285 The width of the tyre across the tread, measured in millimetres.
Profile (aspect ratio) 55 Sidewall height as a percentage of the width - here, 55% of 285 mm (about 157 mm).
Construction R Radial construction, which is what nearly all road tyres use.
Rim diameter 20 The wheel diameter the tyre fits, measured in inches.
Your tyre dimensions
MeasurementValue
Sidewall height 156.8 mm (6.17 in)
Overall diameter 822 mm (32.3 in)
Circumference 2,581 mm (101.6 in)
Revolutions 624 per mile · 387 per km
Equivalent sizes
SizeOverall diameter
265/60 R20 826 mm · +0.5%
305/50 R20 813 mm · -1.0%
275/55 R20 810 mm · -1.3%
275/50 R21 808 mm · -1.6%
275/60 R20 838 mm · +2.0%
305/55 R20 844 mm · +2.7%